This is a case of a 29-year-old patient, G1 P0, with non-contributive personal or familial history.
Her pregnancy was uneventful, she did not report any drug use.
Blood tests for HIV, TORCH, hepatitis B and C were all negative.
Ultrasound scan at 28 weeks of gestation revealed the following ultrasound finding. No other anomalies were detected.
The final diagnosis was preauricular tag.

The isolated preauricular tags were thought to be associated with urinary tract abnormalities. Some recent studies concluded that the prevalence of renal malformations is not any higher than in a normal population unless accompanied by other systemic malformations.[1,2]